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Author Question: When organisms living in seawater grow shells, the ratio between the isotopes of oxygen (18O/16O) ... (Read 39 times)

cmoore54

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on: Feb 28, 2020
When organisms living in seawater grow shells, the ratio between the isotopes of oxygen (18O/16O) trapped in their shell is dependent on the sea temperature. Why might geologists collect these sea shells from deep-sea sediments that are Pleistocene in age and measure their oxygen isotope ratios?
◦ The organisms live in the photic zone, and so photosynthesis must be the main factor in the oxygen content.
◦ The organisms live near the surface, so their oxygen isotope ratios record surface temperature during Earth's great climate fluctuations of the ice age.
◦ They might want to know how cold the water was at the seafloor in the past.
◦ They want to know how metabolism of the organism affects the oxygen isotope ratios.
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Marked as best answer by cmoore54 on Feb 28, 2020

jharrington11

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Reply #1 on: Feb 28, 2020
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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cmoore54

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Reply 2 on: Feb 28, 2020
Wow, this really help

nyrave

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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